- Community Home
- >
- Servers and Operating Systems
- >
- Integrity Servers
- >
- Re: CLM and ILM
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
04-28-2011 07:04 PM
04-28-2011 07:04 PM
Please enlight me about CLM & ILM.
1. Wht is ILM and why it is used?
2. Wht is CLM and why it is used?
Thanks and regards,
Rahul
Solved! Go to Solution.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
04-28-2011 09:43 PM
04-28-2011 09:43 PM
SolutionOn cell-based servers that are based on the HP sx1000 or sx2000 chipset, a portion of the memory in each cell can be configured as cell local memory (CLM), which is non-interleaved memory that can be quickly accessed by processors residing on the same cell as the memory.
Opposite to that is ILM (interleaved memory) , which is type of memory that can be accessed by processors residing on different cells in nPar as the memory.
There are certain recommendations for vPars for example, which define (best practices) what should be the ratio in the cell for CLM:ILM .
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
04-29-2011 02:13 AM
04-29-2011 02:13 AM
Re: CLM and ILM
If ILM becomes faulty than more than one cll will affact. and If CLM becomes faulty than only local cell will affect.
Minium memory must be there to bring a cell up doesn't matter its CLM or ILM is it?
Please correct me if I am wrong.
Regards,
Rahul
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
04-29-2011 02:30 AM
04-29-2011 02:30 AM
Re: CLM and ILM
In HP-UX 11.11 CLM is not supported, so the cells belonging to the nPar running 11.11 need to have 100% ILM memory.
CLM is being used in 11.23 + 11.31.
The optimal CLM settings depend on the applications and workload the OS is running.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
04-29-2011 02:39 AM
04-29-2011 02:39 AM
Re: CLM and ILM
And answering your questions regarding which cells will be affected during failure when using ILM / CLM , I'm not sure that it is exactly like this. Maybe someone here confirms that.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
04-30-2011 06:10 AM - last edited on 05-18-2021 06:05 AM by Ramya_Heera
04-30-2011 06:10 AM - last edited on 05-18-2021 06:05 AM by Ramya_Heera
Re: CLM and ILM
The technical paper enclosed discusses it was well as process memory enjoy
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
04-30-2011 10:12 AM
04-30-2011 10:12 AM
Re: CLM and ILM
When dealing with concepts of CLM and ILM pops up the *awe inspiring* term ccNUMA. A processor normally can access memory anywhere on the server and in cell based systems shows up the inevitable effect of non uniformity. A processor accessing memory on the same cell takes way less time. A processor accessing memory on another cell on the same cross bar would take a little more time. A processor accessing memory on the same cell on a different crossbar takes way more time.
And hitting with a result of non uniformity in the sense of latency and bandwidth.... *ccNUMA* which has now become a significant feature... Don't forget to assign points.
Regards
Ismail Azad